var arr = [
    { name: 'zopp', age: 0 },
    { name: 'gpp', age: 18 },
    { name: 'yjj', age: 8 }
];

function compare(property) {
    return function (a, b) {
        var value1 = a[property];
        var value2 = b[property];
        return value1 - value2;
    }
}
console.log(arr.sort(compare('age')))